Super Mario Teleporting (+ Cloning) Question Block

I'm not sure whether I'm a good model designer, but at least I'm sure I design better than I perform magic tricks, so I'm including a video of a professional magician to show how the trick works (first in the video).

There are some differences in the model, other than using the question mark block; I included some extra cover in the brown inner part to avoid accidental yellow sightings, and I'm including the option to do this in both boxes. The trick, thus, can be conducted:

• Using a single cube with a teleport trick to the other box.
• Using a single cube with teleport tricks in both boxes.

Print-wise, it is a straightforward print:

• It uses AMS for the question mark block, but it is possible to use a single color block to avoid that. Not as nice, but works anyway :)
• Supports are enabled in the profile but they should not be needed.